GPU for dual-monitor CAD?

I'm looking into rebuilding some more of the engineering department's computers... most of them run dual monitors, and it won't have a budget for workstation cards (I've rebuilt some others in that department with large budgets and they are fantastic, but I don't think I'll be getting much headroom on this particular redesign)... my question, for Solidworks 2014, what do you guys think the minimum consumer card would be to run dual monitors in large assembly files fluidly?

I'm looking at the 750ti, R7 265, and R9 270... obviously the 270 will offer the most power, but I'm curious if you guys think a 750ti will handle it fine... I'd like to get a little overkill, but I haven't seen the final budget yet...

No flow simulation or rendering... just need a dual monitor card for fluid rotation of LARGE 3D assembly files... 

If im right, Sollid works 2014 can render on open CL, "correct me if im wrong" so i would personaly grab a Radeon card then.  But its hard to say without budget, what would be your best bet.

The best AMD card you could get, basicly.

The R7-265, is a re stickered 7850, both with 1024 stream processors, so you could also look at one of those, if a 270 or 7870, is to expensive.